Zero memory in small_array.resize and add non_zero_resize

core/container/small_array/small_array.odin

@@ -2,6 +2,7 @@ package container_small_array
 
 import "base:builtin"
 import "base:runtime"
+import "core:mem"
 _ :: runtime
 
 /*
@@ -250,6 +251,8 @@ set :: proc "contextless" (a: ^$A/Small_Array($N, $T), index: int, item: T) {
 /*
 Tries to resize the small-array to the specified length.
 
+The memory of added elements will be zeroed out.
+
 The new length will be:
 	- `length` if `length` <= capacity
 	- capacity if length > capacity
@@ -259,7 +262,7 @@ The new length will be:
 - `length`: The new desired length
 
 Example:
-	
+
 	import "core:container/small_array"
 	import "core:fmt"
 
@@ -269,7 +272,7 @@ Example:
 		small_array.push_back(&a, 1)
 		small_array.push_back(&a, 2)
 		fmt.println(small_array.slice(&a))
-		
+
 		small_array.resize(&a, 1)
 		fmt.println(small_array.slice(&a))
 
@@ -278,12 +281,56 @@ Example:
 	}
 
 Output:
-	
+
 	[1, 2]
 	[1]
 	[1, 2, 0, 0, 0]
 */
 resize :: proc "contextless" (a: ^$A/Small_Array, length: int) {
+	prev_len := a.len
+	a.len = min(length, builtin.len(a.data))
+	if prev_len < a.len {
+		mem.zero_slice(a.data[prev_len:a.len])
+	}
+}
+
+/*
+Tries to resize the small-array to the specified length.
+
+The new length will be:
+	- `length` if `length` <= capacity
+	- capacity if length > capacity
+
+**Inputs**
+- `a`: A pointer to the small-array
+- `length`: The new desired length
+
+Example:
+
+	import "core:container/small_array"
+	import "core:fmt"
+
+	resize_example :: proc() {
+		a: small_array.Small_Array(5, int)
+
+		small_array.push_back(&a, 1)
+		small_array.push_back(&a, 2)
+		fmt.println(small_array.slice(&a))
+
+		small_array.resize(&a, 1)
+		fmt.println(small_array.slice(&a))
+
+		small_array.resize(&a, 100)
+		fmt.println(small_array.slice(&a))
+	}
+
+Output:
+
+	[1, 2]
+	[1]
+	[1, 2, 0, 0, 0]
+*/
+non_zero_resize :: proc "contextless" (a: ^$A/Small_Array, length: int) {
 	a.len = min(length, builtin.len(a.data))
 }